TAXI ACROSS RWY OVERRUN.

Narrative

NO PAX ON BOARD; TAXIING NW ON TXWY CHARLIE TO RWY FOR TKOF; ALLEGED THAT THE RWY 20L/2R RWY OVERRUN AT TXWY CHARLIE WAS UNINTENTIONALLY CROSSED W/O AUTHORIZATION. RWY END AND OVERRUN WERE NOT CLEARLY DESIGNATED AND WERE NOT READILY IDENTIFIABLE FROM THE COCKPIT TO A PLT FAMILIAR OR UNFAMILIAR WITH THE ARPT. THE CURRENT NOS AND ARPT DIAGRAMS ARE ALSO UNCLEAR AS TO THE NATURE OF THE INTXN. A REP OF THE LCL FLT STANDARDS OFFICE HAS INDICATED A SIMILAR INCIDENT OCCURS AT THIS SPECIFIC LOCATION APPROX 3 TIMES PER WK AND HE HAS BEEN TRYING TO GET A WARNING SIGN PUT UP. AVIATION SAFETY IS EVERYONE'S PRIMARY CONCERN. WHILE THERE WERE NO OTHER ACFT INVOLVED IN THIS ALLEGED INCIDENT; AS A FORMER PART 141 CHIEF FLT INSTRUCTOR AND ACCIDENT PREVENTION COUNSELOR; I AM ACUTELY AWARE OF THE POTENTIAL HAZARDS CREATED BY GARBLED OR MISUNDERSTOOD COMS; DISTRS AND UNCLEAR OR CONFUSING SIGNAGE ON ARPTS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: RPTR FEELS THIS INCIDENT WAS BEING USED TO GET SOME LCL ACTION. CTLR MADE NO COMMENT TO CREW AT TIME. FSDO MADE CONTACT LATER. FAA ADMINISTRATOR IS SAID TO HAVE MADE SAME MISTAKE AT THIS INTXN PREVIOUS WK. RPTR'S FIRST TIME IN A JET; BEING CHKED OUT. HAD MANY DISTRS JUST TRYING TO LEARN INSTRUMENTS AND TECHNIQUE OF TAXIING ACFT. 2 DAYS AFTER INCIDENT; HOLDING LINES WERE PAINTED; SIGNS WERE INSTALLED.